54ABT574 Octal D-Type Flip-Flop with TRI-STATE Outputs
July 1998
54ABT574
Octal D-Type Flip-Flop with TRI-STATE
®
Outputs
General Description
The ’ABT574 is an octal flip-flop with a buffered common
Clock (CP) and a buffered common Output Enable (OE). The
information presented to the D inputs is stored in the
flip-flops on the LOW-to-HIGH Clock (CP) transition.
The device is functionally identical to the ’ABT374 except for
the pinouts.
n
TRI-STATE outputs for bus-oriented applications
n
Output sink capability of 48 mA, source capability of
24 mA
n
Guaranteed multiple output switching specifications
n
Output switching specified for both 50 pF and 250 pF
loads
n
Guaranteed simultaneous switching, noise level and
dynamic threshold performance
n
Guaranteed latchup protection
n
High impedance glitch free bus loading during entire
power up and power down cycle
n
Non-destructive hot insertion capability
n
Standard Microcircuit Drawing (SMD) 5962-9322001
Features
n
Inputs and outputs on opposite sides of package
allowing easy interface with microprocessors
n
Useful as input or output port for microprocessors
n
Functionally identical to ’ABT374
Ordering Code
Military
54ABT574J/883
54ABT574W/883
54ABT574E/883
Package Number
J20A
W20A
E20A
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier, Type C
Package Description
20-Lead Ceramic Dual-In-Line
Connection Diagrams
Pin Assignment for DIP and Flatpak
Pin Assignment
for LCC
DS100208-1
DS100208-2
Pin Descriptions
Pin
Names
D
0
–D
7
CP
OE
O
0
–O
7
Data Inputs
Clock Pulse Input
(Active Rising Edge)
TRI-STATE Output Enable
Input (Active LOW)
TRI-STATE Outputs
Description
FAST
®
and TRI-STATE
®
are registered trademarks of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS100208
www.national.com
NSC [ NATIONAL SEMICONDUCTOR ]
